MPH to KM/H

Miles per hour and kilometers per hour are both speed units; this formula converts the same speed from one unit system to another. It works because 1 mile is about 1.6093 kilometers, so multiplying by 1.6093 changes the distance unit while keeping the time unit as hours. The result is an equivalent speed expressed in metric units.

Use this when comparing car speeds, road limits, running speeds, or any measurement given in miles per hour that needs to be reported in kilometers per hour. It is especially useful in science, travel, and international contexts where metric units are preferred.

• Multiplying by 1.6 exactly when more accuracy is needed
• Forgetting that the answer is still a speed in per hour units
• Rounding too early and losing precision in the final result